R^2-40r-400=0

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Solution for R^2-40r-400=0 equation:


Simplifying
R2 + -40r + -400 = 0

Reorder the terms:
-400 + R2 + -40r = 0

Solving
-400 + R2 + -40r = 0

Solving for variable 'R'.

Move all terms containing R to the left, all other terms to the right.

Add '400' to each side of the equation.
-400 + R2 + 400 + -40r = 0 + 400

Reorder the terms:
-400 + 400 + R2 + -40r = 0 + 400

Combine like terms: -400 + 400 = 0
0 + R2 + -40r = 0 + 400
R2 + -40r = 0 + 400

Combine like terms: 0 + 400 = 400
R2 + -40r = 400

Add '40r' to each side of the equation.
R2 + -40r + 40r = 400 + 40r

Combine like terms: -40r + 40r = 0
R2 + 0 = 400 + 40r
R2 = 400 + 40r

Simplifying
R2 = 400 + 40r

Reorder the terms:
-400 + R2 + -40r = 400 + 40r + -400 + -40r

Reorder the terms:
-400 + R2 + -40r = 400 + -400 + 40r + -40r

Combine like terms: 400 + -400 = 0
-400 + R2 + -40r = 0 + 40r + -40r
-400 + R2 + -40r = 40r + -40r

Combine like terms: 40r + -40r = 0
-400 + R2 + -40r = 0

The solution to this equation could not be determined.

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